Dong Qin

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This protocol provides an introduction to soft lithography--a collection of techniques based on printing, molding and embossing with an elastomeric stamp. Soft lithography provides access to three-dimensional and curved structures, tolerates a wide variety of materials, generates well-defined and controllable surface chemistries, and is generally compatible(More)
  • A Kumar, G M Whitesides, H Delamarche, A Schmid, N B Bietsch, H Larsen +16 others
  • 1999
[11] is tricky, since the spin-coating solution does not wet the substrate and flies off the rotating surface. Since the OTS pattern after the lift-off technique is the inverse of the originally stamped ODT pattern, the sample in Figure 1d features macroscopically an oxide surface with printed OTS stripes on a micrometer lateral scale. Beyond the specific(More)
BACKGROUND AND PURPOSE Essential tremor (ET) is suggested to be a neural degenerative disease. The authors investigated the fractional anisotropy (FA) and apparent diffusion coefficient (ADC) value in basal ganglia, thalamus, red nucleus, and substantia nigra in ET patients using diffusion tensor image (DTI). METHODS DTI examination was carried out in(More)
We fabricated and characterized three elastomeric optical devices whose optical properties are controlled by distorting the surface topographies of the elastomeric elements. In the force sensor, an applied force distorts the retroreflective corner cube surface pattern increasing the transmissivity of the device. The magnitude and the location of the force(More)
Antimony (Sb) and copper (Cu) are toxic heavy metals that are associated with a wide variety of minerals. Sb(III)-oxidizing bacteria that convert the toxic Sb(III) to the less toxic Sb(V) are potentially useful for environmental Sb bioremediation. A total of 125 culturable Sb(III)/Cu(II)-resistant bacteria from 11 different types of mining soils were(More)
PURPOSE Our previous study showed that apelin was increased in the vitreous and fibrotic membranes of patients with proliferative diabetic retinopathy (PDR) in vivo, which suggested that apelin may be involved in the development of PDR. In this study, we investigated whether the expression of apelin was upregulated in human retinal pigment epithelial (RPE)(More)
  • Dong Qin, Younan Xia, A Rogers ohn, J ackman Rebecca, Xiao-Meizhao George, M Whitesides
  • 2010
This review gives a brief introduction to materials and techniques used for microfabrication. Rigid materials have typically been used to fabricate microstructures and systems. Elasto-meric materials are becoming attractive, and may have advantages for certain types of applications. Photolithography is the most commonly used technique for the fabrication of(More)
Compressed Sensing, an emerging framework for signal processing, can be used in image and video application, especially when available resources at the transmitter side are limited, such as Wireless Multimedia Sensor Networks. For a low-cost and low-power demand, we consider the plain compressive sampling and low sampling rates and propose a Compressed(More)
Prolonged hyperglycemia is an important risk factor of the pathogenesis of diabetic retinopathy (DR). Extracellular matrix molecules, such as fibronectin, collagen IV, and laminin, are associated with fibrotic membranes. In this study, we investigated the expression of fibronectin, collagen IV, and laminin in RPE cells under high glucose conditions.(More)
This article describes the fabrication and operating principles of a device suitable for measuring displacements, stresses, strains, accelerations, and forces. The device consists of an elastomeric material with a surface relief diffraction grating embossed on its surface. Mechanical compression of this element changes the way that it diffracts light. This(More)